Insulator-pin.



PATENTED MAY 28, 1907.

- w. s. LEE, J11. IN$ULATOR Pm. APPLIUATION FILED 11113.10, 1906.

w T m V. m

ITA/ESS" VVILUAM S..LEE,JR.

ATTORNEYS UNITED srig i mr OFFICE,-

VVILLIAM STATES LEE, JR., CHARLOTTE, NORTH CAROLINA.

I tNSULATOR-PlN No. 8 255,253. Specification of Letters Patent. Patented May 28, 1907.

1 Application filed February 10,1906. SerialNo. 300,440. Toad whom-it may'm'm gether and to the cross arm B and without Be it known that I, WILLIAM STATES LEE, any strain on the-insulator. '-Jr., a citizen of the United States, and a resi- E is a p ece of cast iron which cemented dent of Charlotte, in the county of'Mecklem or otherwise fastened 1n the insulator F. It

I 5- burg and State of North-Carolina, have made I may have cement retaining means such as 60 1 rise the minimum number of parts so com- I strength and durability, and facilitate and certain new and useful Improvements in In the coarse thread 6, or,-it may have other sulator-Pinaof which the following is aspecisuitable detents. This piece E has at its fication. lower end a hole 1/ threaded to lit the upper 7 My "invention relates toan improvement threaded end 0 of the bolt 0 so that the piece, r0 in securing pins for large insulators of the E may be unscrewed; the lower end of E is 65 kind used for supporting conductors for high made true to fit the top of the bearing cone A, potential electrical circuits. when the parts are assembled. As the top The object of my invention is to so con- I surface of the cone-shaped standard A'is parstruct such' an insulator pin that will comallel with the lower surface of the base flange a, and the lower surface of the piece E is 70 tuned to iit the upper surface of a perfectly, it will be seen that the piece E when screwed expedite line repairs by the ease and facility on the upper threaded cut of bolt (l fits with which injured or defectiveinsulators squarely thereon, and that strain on the iiiined as to secure ample and the greatest may be replaced, and also to secure an econsulator proper cannot cause the bolt to bend.

omy of cost of such replacing of insulat b The shape of the side wall of the piece E is reducing in size or amount the part f th substantially the same as that of the side pin which has to be discarded, and by a walls of the standard A, and hence forms a method of replacing requiring a minimum direct Continuation of the Same, and by ?5 amount of labor and time. virtue of this shape divides, equalizes and 80 H To these ends my invention consi ts i ce distributes strain on the base and the bolt tain novel features of construction, arrange- The 00116 A 18 to be a sllllple cast g with mentand combination of parts as will be no machine work, while the bolt (1 is a simh i fg f ll d ib d d i t d t ple rod of steel or iron, with a shortthread i th claimfreference b i b d t th alike on each end, the lower threaded end 8 .companying drawing,.in which to receive the nut D. The piece E is a I igure 1 is asectional elevation of an insuplain casting with no machine work except later and the insulator pin embodying my inthe short internal thread init's lower end, vention. Fig. 2 is a vertical e ti f a owing to which fact, entailing its low cost, metal truncated cone forming parts of my it may be discarded with broken insulators. 9o improvements. Fig. 3 is a top plan view of It will thus be seen that I produce a sim- I same. Fig. 4is a cast iron piece suitable for ple, cheap and efiicient device consisting of cementing into any insulator, and Fig. 5isa few parts, which will secure ample and l to plan View of same. great strength and will facilitate and expecarrying out my invention, I use abase dite line repairs and can be readily removed 95 or standard A of castiron or other suitable and. replaced, and which is the more valumaterial, said standard or base being a thin able as such repairs ordinarily have to be hollow, truncated cone of proper height havmade in places more or less inaccessible} ing an enlarged thickness or flange or at its When it is necessary to replace an insula- 4 5 base, and having the top a bored .or cored tor which has been damaged by-lightning oo out with a hole a of proper size passing or other causes, 'by simply unscrewing the through said top; the top surface of the cone broken insulator and with it the piece E 1s parallel withits base, the rimaofsaid base which is embedded in the insulator, the

constituting its sole'bearing surface on the operator screws on another piece E emcross arm B. s bedded in the perfect insulator-[leaving the 105 C represents a bolt threaded at its lower old bolt (1 as it is in the cross arm, thus ends and at its upper end cthe threads exsaving the expense of new bolts and new tending any suitab e distance required; the cones which is considerable and also saving rlower'threaded end carries a nut D, which the time necessary to break away the inwhen runupclamps theparts of the pin tosulator as has been usually the custom in no earlier styles of insulator pins and attach merits; the only thing that is lost is the piece E, thecost of which is small.

I claim:

1. An insulator pin comprising a hollow conical metal base, and a securing bolt pass ing through the same, said bolt threaded at its upper end, and'a metal head screwed on the up er end of said bolt, said head adapted to be astened into an insulator and to be unscrewed from the upper end of the bolt to replace a damaged insulator.

2. An insulator pin comprising a hollow conical metal base, a securing, bolt passing through the same and threaded at its upper end, and a separate conical metal head or cap internally threaded to screw on upper end of the bolt, said conical cap haw ing its lower edge parallel with the lower end of the hollow conical base, and lilting true the upper end of the same, the upper end of said cap provided with means to the secure the same in an insulator by cement ing or otherwise.

3. An insulator pin comprising a hollow metallic trdneatedcone shaped. base part having a horizontal flange at its lower end, and an opening through its upper end, its upper face and the lower face of the flange being parallel, a securing bolt passing through said opening and threaded at its upper end, a truncated cone shaped metallic cap screwed on the u Jper threaded end of said bolt, the lower e go of said cap being parallel with the lower face of the horizontal llange at the lower end of the base part, and fitting true the up )er end of the base part, thenlpper end ol said cap provided with detents to receive cement and secure said cap in an insulator.

WILLIAM SlA'll lS LEE, Jn. Witnesses:

J. W; FRAsEn, l D. S MPsoN. 

